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8 November, 11:36

If the teacher picks a group of 3 at random, what is the probability that everyone in the group is a girl?

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  1. 8 November, 11:42
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    Picking everyone is a dependent variable so

    4/6*3/6*2/6=

    =2/3*1/2*1/3

    =2/18

    =1/9

    the probability is 1/9
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